JEE Main 2018 — Electrostatics Question with Solution
From: JEE Main 2018 (Online) 15th April Morning Slot
Question
A body of mass and charge is connected to spring of spring constant It is oscillating along -direction about its equilibrium position, taken to be at with an amplitude . An electric field is applied along the -direction. Which of the following statements is correct ?
Choose an option
Show full solutionCorrect option: B
Correct answer
BThe total energy of the system is
Step-by-step explanation
On the body of charge q a electric fied E is applied, because of this equilibrium position of body will shift to a point where resulttant force is zero.
kxeq = qE
xeq =
Total energy of the system
=
= mA2 +
kxeq = qE
xeq =
Total energy of the system
=
= mA2 +
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Electrostatics chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2018, covering the Electrostatics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.